From: will.deacon@arm.com (Will Deacon)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] efi/arm*: Only register page tables when they exist
Date: Wed, 17 Jan 2018 10:19:23 +0000 [thread overview]
Message-ID: <20180117101922.GB27892@arm.com> (raw)
In-Reply-To: <20180116140832.26731-1-mark.rutland@arm.com>
On Tue, Jan 16, 2018 at 02:08:32PM +0000, Mark Rutland wrote:
> Currently the arm/arm64 runtime code registers the runtime servies
> pagetables with ptdump regardless of whether runtime services page
> tables have been created.
>
> As efi_mm.pgd is NULL in these cases, attempting to dump the efi page
> tables results in a NULL pointer dereference in the ptdump code:
Acked-by: Will Deacon <will.deacon@arm.com>
Ard -- please can you pick this one up?
Cheers,
Will
next parent reply other threads:[~2018-01-17 10:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20180116140832.26731-1-mark.rutland@arm.com>
2018-01-17 10:19 ` Will Deacon [this message]
2018-01-17 12:01 ` [PATCH] efi/arm*: Only register page tables when they exist Ard Biesheuvel
2018-01-23 18:50 ` Ard Biesheuvel
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